Paper oil container



mrnmmnm PAPER OIL CONTAINER Filed NOV. 25, 1938 3 Sheets-Sheet 1 INSIDE OF WALL 002 W? INVENTOR May 28, 1940. M. P. KERNAHAN PAPER OIL CONTAINER Filed Nov. 25, 1938 5 Sheets-Sheet 3 MB 525m .210

nhk

ii. .6 men:

ATTORNEYS main May as, 1940' UNITED STATES PATENT 'QFFICE I PAPER OIL CONTAINER A Martin P. Kerna'han, Phillipsburg, N. J., assignor to The Canister Company, Phillipsburg, N. a corporation of New Jersey Application November '25, 1938, serial No. 242,2

14 Claims.

The invention is a. single-service paper con .tainer for-retailing lubricating oil and like oily products. The objectis to provide a paper 'container; not only of low production cost; proof against 011 leakage, but one which is also proof against the slow permeation of its oily contents I to the exterior of the container "which in the readily disposed of when empty, as by burningthem, and that they are relatively inexpensive.

lapse of time causes grease-spots to appear on the label or enternal paper surface. .Paper containers for lubricating oil have the advantage over metal receptacles that they are less liable to fraudulent re-use and that they can be more But in order to bring their cost equal to or under the cost of metal containers they require to-be made of standard cheap paper stock without" special coatings or treatments, and within such limitations it has been found difficult to organize an assemblage of paper layers in such a way as .to prevent, not merely leakage, but also the tendency to develop *grease-spotting while resting on the dealers shelves. Such spotting renders them unacceptable to the trade and, so far as I am aware, a spot-proof paper oil container capable of production within practicable cost,

limits has not heretofore been made available.

The invitation extends," in its preferred form,

to a particular shape for paper oil containers,.

which specially suits them for use in servicing automobile engines, as described below.

Such preferred shape'is taken for exempliflcation of the principles of the invhtion'in theaccompanying -drawings,,wherein Fig. 1 is a side elevation of the container with 1, parts broken .away; Fig. 2, a cross-section: thereof on line II-II; Fig. 3a greatly magnified section of the wall structure at III in Fig. 2 substantially true to scale; Fig. 4 a plan of the composite blank from which the conical shape is rolled; Fig. 5 a longitudinal section of the latter on line V-V (the paper thicknesses being greatly exaggerated for illustration'purposes) ;:Figs. 6,? and'8 represent successive stages in rolling the blank of Fig. 4. also' in exaggerated thickness; Fig. 9 is a detail section of the preferred style -of crimp of the metal end closures; Fig. 10 represent the container in use; Figfll represents the i vention' incorporated in acylindrical spiralwound container; and Fig. 12 is a longitudinal section-of the wall of Fig. 11, shown in greatly exaggerated/thickness in order to illustrate the relationship.

The container conical in form, and in the usualquart size,;is

' about twelve inches long, with a metal end clo-.

sure at itsjlarge end which is'about 3% inches in diameter and an end'closure at its small end which is not over two inches in diameter. Both of these end-closures are tightly crimped onto (Cl. 229 a5) shown in Figs. 1-10 is frustothe ends of the paper body, one of which is applied after the oil has been introduced, and the v container is intended to be opened by punching or making a holein the small end closure whereupon it can be thrust into the filling hole of an automotive engine, as indicated in Fig. 10, and

left there to empty and drain its contents into the engine while the attendant attends to other duties This is an improvement in single service oil'containers in that it avoids pouring. spouts and transfers the oil to the crank-case with the least drip onfenders or surrounding objects. No wiping ragis needed and the friction of the 'paper body. on'the edge of the filling hole is .suflicient to hold the containers upright. Being :of paper it can be wedged into the hole where a glass or metal container of the same shap would not stick.

The structure of the wall of the new container which prevents oil-spotting willbe best understood from its method of fabrication, which in the fru'sto-conical form is as follows: A section or blank I of ordinary chip-stock paper,. of a thickness of about .012 or .015 inch, is cut or kind known and sold as grease-proof. The glue is hide or fish glue or any other suitable -oil-insoluble adhesive, and is well distributed over the interface between the two blanks for a reason presently to appear.

A third arcuate section 3 is then glued on top of the sectionl and over section I, overlapping both of them, and with the same kind of glue section -2. It is alsoof thin paper, preferably grease-pr'oofif and also about .002 inch thick. These three superposed sections can be united ,in any desired sequence and together constitute a composite container blank which is completed by gluing to its opposite face at its free end an arcuate label 4 to form the outside surface ofthe body. This label is cut from ordinary waterproof paper stock which is cheaply obtained, and is glued in place with-preferably a slight overlap beyond the end edge of the chip-stock. This overlap is marked I in Figs. 5 to 8.

The container body is formed from this composite blank by tightly rolling it on a conicalm'andrel of theproper ,dimensions, starting with the thin paper end, and with a uniform and thor-,

ough application of adhesive between the, convo-" .well distributed over its whole interface with 72,262,558 A and 24, with an aggregate thickness of .at least ;.045 inch as. indicated, which is many times that of the glue-encased parchment convolutions; they are glued to the parchment convolutions and to each other and wound with their edges flush o'r abutting, as shown at 25, in which relation they form a continuously smooth supporting surface, or backing, for the oil-barrier -part devoid of ledges or interruptions likely to induce cracks in the time-hardened adhesive. f

The remainder of the wall structure includes merely the protection against external moisture corresponding to the waterproof label in the form first described and in this case consists of a spiral winding of parchment paper ribbon 26 wound with about a A, inch overlap, as' indicated at 21, and glued directly to the chip-board stock. The

, label 28 is waterproof and straight wound for ping oil permeation, according to do The complete wall, it may be noted, is constituted appearance sake and, glued to the parchment'ZS" rby dextrine glue, completes the covering.

The thicknesses of the several layers are identified in the drawings to show the general relationship and the gluellayers are also indicated in their approximate relative proportions, of course appearing much thicker than actual on account of the exaggerated scale. In all cases, the final moisture-proof layer or label-layer covers the whole of the exposed chip-stock, thus to prevent its-softening by access of moisture. The chipstock layers serveno function wh' tever, in stophis invention. This is bibulous paper and any oil 0 water reaching it would immediately render itoft and unfit to support the oil barrier properly and in the manner described. The. thickness of the chipstock however, is relied on to guard against oil-' spotting by its inability to bend so sharply as to create fissures in the glue-encased parchment layer which has been referred to as the oil barrier.

solely of low cost materials which can be assembled in the quickest possible way, that, is, on a spiral winder. The immediate product, as will be understood, is a long tube which is cut up, also automatically, to form the cylindrical container body which is then .supplied with its straight wound label. ,The inner liner layer (2l) .is free of any glue on its inner surfaceQand the container is therefore suitable for edible. products.

While the metal end closures 'can be applied to the paper body in various ways, it is preferred for the wall structure of this invention to form the crimp-flange with a peripheral thickening represented by a peripheral, rolled-over bead marked 30 inrFig. 9. This is best rolledover inwardly and more and, when crimoed into the paper structure tends to crowd the latter into a circular groove or valley formed in the opposite crimp wall, as indicated at 3! forming in effect a double line. crimp,

one'against each shoulder of the valley 3l. It is customary to seal the ,joint between the paper and metal with some suitable cement or sealing medium applied to the edge before vailixing the end closure as extra insurance against ,leakage' and the valley is also useful in this connection in that it facilitates circumferential distribution of I wall.

.the cement under the pressure of the crimping process making thesealmorereliabla The invention includes this form of end closure and crimp independently of the structure of the paper I claim;

1. A paper oil container having'ap plied end or less folded back "on itself an oil barrier part, including a relatively thin layer. of parchmentized or grease-proof paper completely encased in adhesive on both of its I sides, a surrounding backing for said oil barrier secured thereto, said backing including plural glued-together layers of chip-stock paper'forming a continuously smooth support for said thin oil barrier, and a protective covering for the whole of said backing including one'or more windings of moisture-proof paper.

. 2. A paper oil containerhaving applied metal end closures and a tubularpaper body composed of an oil barrier part including a relatively thin the adhesive on the outer side thereof, and forming a continuously smooth supporting surface for said grease-proof layer, and: a protective covering for said backing including one or more wind ings of moisture-proof paper completely enclos ing the backing;

f 3. A paper oil container having applied metal end closures and a tubular paper body composed of an oil barrier part comprised of a thin layer of grease-proof paper completely and uniformly encased in adhesive on both of its sides, a thin layer of grease-proofpaper secured to said layer by the adhesive on the inner sidethereof consaid barrier including plural layers of chip-stock paper secured to said barrier layer by the adhew ing continuous layer of glue, one of said layers being exposed to the oil contents and the other being completely covered with the adhesive, the two layers together having a thickness approximating .005 inch, and a surrounding support for said layers composed of plural layers'of chip-stock paper continuously glued thereto and closures and atubular paper body composed of to each other and aggregating athickness at least ten timesthe thickness of said completely covered grease-proof layer, and a protective moisture-proof layer completely covering said chip-board stock.,

'5. A paper container for retailing lubricating oilhaving a frusto-conical: paper body with applied metal' end closures, the smaller end closure being adapted for being opened and being of a diameter not greater than about two inches? said paper body comprising a barrier part including arelatively thin layer of grease-proof paper completely and uniformly covered with adhesive and size adapted to be thrust into the oil-filling hole of an automotive engine to'be supported frictionally thereby while itscontents are being transferred.

6. A single-service paper oil container com-- posed of a frusto-conical paperbody having apon both of its sides and a surrounding backing for said barrier including plural layers of chipstituting a liner for the containena backingior plied metallic end closures, the smaller of said end closures being less than approximately-two inches in diameter whereby it is adapted ,to be thrust into an engine oil-filling hole, said body comprising successively united layers including two adjacent layers of, relatively thin greaseproof paper continuously glued to each other, one of said layers being exposed to the contained 011 and the. other being covered with adhesive on both itssides and glued thereby to a backing, said backing comprising plural glued-together layers of chip-stock paper surrounding said greasesaid barrier section and continuously glued to it over the full extent of its interface therewith,

, said backing section forming a continuously void of ledges, and an' arcuate moisture-proof smooth supporting surface for said barrier, de-

label glued to and completely covering the backing.

8. A paper'oil container composed of a cylindrical 'body formed of convolutions of spirally wound ribbon of thin grea'se-proofe'd paper each convolution overlapping the preceding convolution as wound by more than and their interfaces being continuously and completely glued to each other, a plurality of layers of chip-stock paper ribbonwound and glued together in brokenm joint relatio'n next to the overlapping portions of said grease-proofd paper [and continuously glued to said overlapping portions whereby said. overlapping portions are completely covered with glue on both sides, said chip-stock layers constituting a relatively thick support for the glueencased grease-proofedpaper and a moistureresisting layer or layers of paper glued around said chip-stock layers.

9. A paper oil container having a cylindrical body composed of a single ribbon of greaseproofed paper wound to overlap itself by at least 50% of its width and having the interfaces of its successive convolutions continuously glued together, a successionoi layers of chip-stock ribbon wound upon said grease-proofed paper, the first being continuously glued thereto and the others being glued to each other in flush broken-jointed relation and together forming a relatively thick backing for said grease-proofed convolutions, and one or more moisture-resisting layers of paper ribbon wound around and glued .to said chipstock. l

a 10. A paper oi l container having applied end closures and a tubular body composed of an oil barrier part, including a relatively thin layer of grease-proof material completely-encased in an adhesive on both of its sides, a surrounding backing for said oil barrier secured thereto, said backing including plural glued-together layers of chip-stock paper forming a continuous support for said thin oil barrier, and a -.protective covering for the'whole of said backing including" one or more windings of moisture-proof paper.

, 11. In a container for oil and grease, a laminated side wall consisting of a plurality of plies of chip-stock paper, and an oil barrier part, including two adjacent layers of relatively thin oil resistant material, spirally wound in broken-' 'joint relation and united to each other by adhesive, one of which is wholly enveloped in the adhesive onboth its sides and the other of which 1 is exposed to the contained oil, and films of adhesivecoextensive' in area with said plies uniting each ply to an adjacent ply or plies. 12. In a container for oil and grease, a laminated side wall consisting of a plurality of plies of chip-stock paper and'an oil barrier part, including an inner-liner of two layers formed from a single ribbon of parchmentizedor grease proof paper spirally wound in overlapping relationship h and united to each other by adhesive, the underlapped layer of which'is wholly enveloped in adhesive on both of its sides and the overlapped layer of which is exposed on its outer side to the contained oil, and films of adhesive coextensive in area with said plies securing the oil barrier to thefirst ply and uniting each succeeding ply to an adjacent ply or plies.

13. A paper oil container having applied metal 'end closures and a tubular body composed of an oil barrier part and a surrounding backing for said oil barrier secured thereto, said backing including plural glued-together layers of fibrous material, each of said layers being spirally wound with the adjacent edges in abutting relationship, the oil barrier comprising tw adjacent layers of parchmentized or grease-proof paper spirally wound in overlapping relationship, the overlap-- ping layer being slightly greater in area than the runderlapping layer, the two layersforming a body consisting of sections having their edges superimposed at the lapping joints, the underlapped layer being completely and uniformly encased in adhesive on both of its sides and the encasement including the superimposed edges forming a non-permeable seal at the lapping joints, and a protective covering for said backing including one or more windings of moisture-proof paper glued thereto.

14.. A paper oil container having applied metal -end closures and a tubular paper body composed of an oil barrier part comprising two adjacent "layers formed from a single ribbon of parchmentized or grease-proof paper spirally wound in overlapping relationship, the overlapping layer being slightly greater in areathan the underlap ping layer and the two layers forming a body consisting of laminations having their edges superlapped layer being completely and uniformly encasedin adhesive on both of its sides and the encasement including the superimposed edges forming a non-permeable seal at the lapping joints, a surrounding backing for said oil barrier secured thereto, said backing including plural gluedtogether layers of chip-stock paper forming a continuously smooth support for said oil barrier, and a protective covering forsaid'backing includingone or more windings of moisture-proof paper glued thereto.

MARTIN P. KERNAHAN,

imposed at the junction of the laps, the under- I P. S. KEYSER COMB CLEANER Filed May 4, 1939 m4. ATTORNEY 

